Spark-arrester.



- F. J. PIERCE.-

SPARK ARRESTER.

APPLICATION FILED mums, 1908.

909 660. Patented Jan 12, 1909. s

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F. J. PIERCE.

SPARK ARRESTBR. APPLIOATION FILED mm: 2a, 1908.

Patented Jan.12,1909.

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FRANK .T .PIEROE, OF McGOOK, NEBRASKA.

SPARK- ZARRESTER.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed June 23, 1908. Seria1'No.439,956.

To all whom it may concern:

Be it known that I, F RANK J. PIERCE, a citizen of the United States, and a resident of ,McCook, in the county of Redwillow and State of Nebraska, have invented a new and Improved Spark-Arrester, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved spark arrester for locomotives and the like and arranged to completely arrest the sparks and cinders while the locomotive is running, to allow .of conveniently and quickly cleaning the arrester of the sparks or cinders at any time and at the will of the engineer, and using the exhaust steam both for drawing the cinders against the arrester for arresting the cinders and for removing the cinders from the arrester for cleaning purposes, the arrangement also permitting of opening the arrester for free draft when firing up.

The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in theclaims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of the improvement in position in the smoke box of a loco-,

motive, the smoke box being shown in section; Fig. 2 is a longitudinal centralsection of the same on the line 22 of Fig. 1; Fig. 3 is a sectional plan view of the improvement; Fig. l is a transverse section of the same on the line Jr-4: of Fig. 3; Fig. 5 is an enlarged end view of a pair of perforate panels operating in unison; Fig. '6 is a perspective view of one of the trunnions for a perforate panel; and Fig. 7 is a side elevation of the smoke box of a locomotive provided with the improvement, part being broken out.

The spark arrester A is arranged within the smoke box B, a distance above the lower end of the-battle plate C, so that the smoke,

gases, sparks and cinders passing through the smoke flues of the boiler are deflected by the bafile plate C and are'then drawn upward against the under side of the spark arrester A by the action of the exhaust steam assing upward through the exhaust nozzle to the stack E in the usual manner. It is understood that the spark arrester A normally presents an uninterrupted perforate surface to the upwardly moving smoke, gases, sparks and cinders, so that the latter are retained within the lower portion of the smoke box B while the smoke and gases are free to pass through the perforations of the spark arrester A, to finally escape through the smoke stack E.

The frame F of the spark arrester A is .disposed horizontally in the smoke box B and is secured to the side thereof, the front end of the frame F extending close to the front end of the smoke box B and the rear end of the frame F reaching to the baflie plate C, as plainly shown in Figs. 2 and 7.

The frame F is provided at its rear corners with openings or cut-out portions F (see Fig. 1) for the passage of the steam pipes C employed for delivering the steam from the steam dome to the locomotive engine. The frame F is also provided with a depending bo-x portion F through the bottom of which extends the exhaust nozzle D, as plainly shown in Fig. 2.

In the front portion of the frame F are arranged pairs of perforate panels G, G. extending longitudinally and normally inclined towards each other, so that the adjacent side edges abut or contact, as plainly indicated in Fig. 5. Similar pairs of perforate panels 'H, H, H H are arranged in the rear ofthe panels Gr, Gr on opposite sides of the depending box portion F of the frame F, and in the open sides of the box portionF and on opposite sides of the exhaust nozzle D are arranged pairs of perforatepanels I, 1. Each of the panels G, G, H, H, H 1-1 I, I is provided at its ends with heads J (see Fig. 6), carrying trunnions J',journaled in suitable bearings arso .as to enable the latter :to impart a swinging motion to the bell crank lever, which by the link Q and the arm P rocks the shaft 0.

Now when the shaft 0 is rocked, the arms N and the links L impart movement to the bars K, so that a rocking motion is given by the crank arms J 2. to the trunnions J to rock the panels G, G, H, H, H*, H, I, I in unison. The crank arms J 2 for adjacent, panels are arranged in diametrically opposite directions, so that a pair of panels G, Gr, H, H, H'-, H or I, I are rocked, to cause their opposite sides to contact, thus reversing the panels, as will be readily understood by reference to Fig. 5.

If desired, the engineer may move the bell crank lever B into an intermediate position, so that the panels of the several pairs stand parallel to each other, to allow a free uninterrupted draft through the smoke box at the time the boiler is fired up, it being understood that in this case the smoke, gases, cinders and all products of combustion readily pass through the spark arrester to the stack E. Now when the locomotive is running it will be seen that in either of the two inclined positions of the panels mentioned, the exhaust steam passing up through the nozzle 1) draws the cinders against the perforate or screening surface, and when the screens are reversed the exhaust steam removes the cinders, previously deposited against the perforate or screen surface, from the same, and causes the said removed cinders to pass out from the smoke stack E.

The pairs of panels l, I in the'open sides of the box portion 1*", have the axes of their trunnions J inclined upwardly and. outwardly, as plainly indicated in Fig. 2, so that free escape of the exhaust steam is had without danger of throttling the exhaust steam and causing back pressure in the cylinders of the locomotive engines.

Having thus described my invention, I

'claim as new and desire to secure by Letters Patent:

V 1. A spark arrester for locomotives and the like, comprising perforate rocking members arranged within the smoke box of the engine, and means under the control of the engineer to rock the said memberswhereby adjacent members will be swung in opposite directions to cause their side edges to contact to form an uninterrupted zigzag perforate surface for arresting the cinders.

2. A spark arrester for locomotives and the like, comprising perforate panels arranged within the smoke box and forming an uninterrupted perforate surface for arresting the cinders, and means under the control of the engineer for reversing the panels and forming again an uninterrupted surface for arresting the cinders and for cleaning the panels of the cinders previously lodged on the reverse faces of the panels.

8. A-spark arrester for locomotives and I the like, comprising a horizontally disposed frame adapted to be arranged in the smoke box above the lower end of the baffle plate,

for the arrest of the cinders and the escape of the smoke and gases.

4. A spark arrester for locomotivesand the like, comprising a horizontally disposed frame adapted to be arranged in the smoke box above the lower end of the battle plate, the said frame having a depending box portion through the bottom of which extends the exhaust nozzle, perforate panels havin trunnions at the middle of their ends and journaled in the said frame and its depending box portion, and means under the control of the engineer for rocking the said panels, whereby adjacent panels will be swung in opposite directions to cause their gide edges to contact to form a zigzag surace. V

5. A spark arrester for locomotives and the like, comprising a horizontally disposed frame adapted to be arranged in the smoke box above the lower end of the bafile plate, the said frame having a depending box por-- tion through the bottom of whichextends the exhaust nozzle, perforate panels having trunnions at the middle of their ends and' journaled in the said frame and having their axes arranged in a horizontal plane, and perforate panels having trunnions journaled in the sides of the said depending box portion on opposite sides of the exhaust nozzle,

and means under the control of the engineer for rocking the said panels to bring either of vthe side edges of adjacent panels in contact zontal plane, and sets of perforate panels having trunnions journaled in the sides of the said box portion on opposite sides of the exhaust nozzle,.the axes of the trunnions of each of the said box portion panels being inclined upwardly and outwardly, and means under the control of the engineer for rocking the said panels simultaneously to open,

-to close or to reverse the same.

7. A spark arrester for locomotives and the like, provided with a pair of perforate panels eachhaving trunnions at the middle of the ends, crank arms on the said trunnions extending in opposite directions, and a plate mounted to move in the direction of its length and engaged by the wrist pins of the said crank arms to rock the said panels simultaneously to open, close or reverse the panels.

8. A spark arrester for locomotives and the like, provided with a frame having a box portion through the bottom of which extends the exhaust nozzle, and perforate panels in the open sides of the said box portion at opposite sides of the said exhaust nozzle, the said panels being inclined both in the direction of their length and their width, and the adjacent panels adapted to be moved in opposite directions to bring their upper and lower edges alternately into contact to form a zig-zag surface.

9. A spark arrester for locomotives and the like, provided with a frame having a box portion through the bottom of which extends the exhaust nozzle, and perforate panels in the open sides of the said box portion at opposite sides of the said exhaust nozzle, the said panels being inclined both in the direction of their length and their width, the said panels being mounted to rock to bring either of the side edges of adjacent panels in contact with each other or to hold them parallel with each other, and means under the control of the engineer for rocking the said panels.

10. A spark arrester for locomotives and the like, comprising a horizontally disposed frame adapted to be arranged in the smoke box abovethe lower end of the baffle plate, the said frame having a depending box portion, and perforate panels in the said frame and the said box portion, the adjacent perforate panels in the said frame being adapted to be moved in opposite directions to bring their upper and lower edges alternately in contact to form an uninterrupted perforate surface zig-zag in cross section.

11. A spark arrester for locomotives and the like, comprising a horizontally disposed frame adapted to be arranged in the smoke box above the lower end of the baflie plate, the said frame having a depending box portion, and perforate panels in the said frame and the said box portion, the adjacent perforate panels in the said frame being adapted to be moved in opposite directions to bring their upper and lower edges alternately in contact to form an uninterrupted perforate surface zig-zag in cross section, and the panel in the box portion being inclined upwardly and outwardly.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK J. PIERCE.

Witnesses:

H. E. CULBnRTsoN, JNo. E. KELLEY. 

